1.( )
A.plus | B.six | C.pen |
A.computer | B.camera | C.radio |
A.DQ543 | B.SQ345 | C.CQ435 |
A.uncle | B.aunt | C.friend. |
A.three | B.thirteen | C.seven |
A.in English | B.in Chinese | C.in the box |
A.16-8 | B.17-9 | C.11+5 |
A.73942 | B.73249 | C.72943 |
A.he | B.her | C.she |
A.5 | B.15 | C.13 |

同类型试题

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2


y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

